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photo is of Q.4 ka a)-
answer 1-
Earth has a core, but this is really two distinct parts: the inner core and the outer core. Both parts of the core are made up of mostly iron and some nickel. The difference is that in the inner core, those minerals are solid and in the outer core, they're liquid.
answer 2-
There are two main types of physical weathering:
Freeze-thaw occurs when water continually seeps into cracks, freezes and expands, eventually breaking the rock apart.
Exfoliation occurs as cracks develop parallel to the land surface a consequence of the reduction in pressure during uplift and erosion.
answer 3-
Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life.
answer 4-
b)-
Weathering and erosion are both natural geological processes which act on the matter on the surface of the earth such as rocks and soil and causes them to move and reshape the surface of the earth. Weathering refers to the breaking up of the rocks into smaller fragments that ultimately changes the size and structure of the rocks. Forces of nature are for the most part responsible for this process. Erosion, on the other hand, involves several processes such as wind, water flow, and movement of ice, which results in the change from one location to another.
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